The earliest printing that we have found of O’s De successionibus (TUI 1584 t. 8.1) is in a large collection of treatises on the topic published in Köln in 1569. This is probably not the first printing. There are more records of his commentary on JI.3.6: Oliuerij Textoris Turonensis & Ligoliani In celeberrimum Institutionum Imperialium titul. De gradibus cognationum, commentarius elegans iuxtà ac doctus :
ab eodem in Valentina Delphinatus Academia editus anno à Christi natiuitate vicesimonono supra milesimum [sic]: omneis [sic] omnium cognationum & affinitatis arborum declarationes, & vtilitates inde nascentes complectens (Lyon: heirs of Iacobus Gunta, 1554). Despite the errors in the Latin, there is no particular reason to doubt that this identifies a jurist who came from Ligueil (dép Indre-et-Loire) in the county of Tours, who first published this work in the Academy of the Dauphiné in Valence (dép Drôme) in 1529. Though the work uses JI.3.6 as a springboard, it is very much a canonistic work. That O. was also a canon of Gap (dép Hautes-Alpes), as is stated in the Thesaurus, we have not been able to confirm, but have no reason to doubt.